Martey, Edward Markwei, and Patricia Crentsil. “The Relationship Between Birth Order and Sales Person’s Performance in Ghana.”. International Journal of Technology and Management Research 2, no. 3 (March 12, 2020): 28-32. Accessed May 4, 2024. https://ijtmr.ktu.edu.gh/index.php/ijtmr/article/view/64.